I think I was having data problems before the Update. I seem to remember not being able to get the weather than morning on cellular or wi-fi. I did the update, and everything seemed to work fine for a while. Yesterday I went back to not being able to get online with either cellular or wifi. This morning I did a master reset. Everything worked fine. Now, I'm back to only being able to connect with Wifi. I'm getting no Data despite having full bars and seeing a 4G icon on my phone.
AT&T
Lumia 520
US